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the probability is 1 in 4 million that a single auto trip in the US will result in a fatality. Over a lifetime, an average driver takes 50,000 trips. What is the probabiltiy of a fatal accident over a lifetime. Explain.
The managers of a brokerage firm are interested in finding out if the number of clients a broker brings into the firm affects the sales generated by the broker.
Romance USA present reported that 11 percent of all books sold are of the romance genre. If a local bookstore sells 316 books on a given day
Each time marksman i fires he hits the target,independently of the past, with probability P i,i=1,2,3. Determine the proportion of time, in the long run, that each marksman shoots.
Normal distribution has mean of 80 and standard deviation of 14. Find out the value above which 80 percent of values will occur.
The proportion of 25-29 year olds who are smokers is 0.032
If, 20 patients improved, 7 declined, and 3 remained the same, assess whether or not patients undergoing this treatment are showing significant change from baseline to 3 months afterward. Report a p-value.
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
A machine is adjusted so that when under control, the amount of sugar filled in a bag is normally distributed with a mean amount of 5 pounds.
Chicken Delight claims that 84 percent of its orders are delivered within 10 minutes of the time the order is placed. A sample of 70 orders revealed that 55 were delivered within the promised time.
Percentage points in either direction from what would have been obtained by interviewing all voters in the United States." Find the sample size suggested by this statement.
The hypothesis is to be tested at the 5% level of significance. The critical value from the table equals:
For the most recent year available the mean annual cost to attend a private university in the US was $26,889. Assume the distribution of annual costs follows a normal probability distribution and the standard deviation is $4,500. 95% of all studen..
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